Hey, I built twineconvert because every existing file converter (CloudConvert, Convertio, even most free ones) uploads your files to their servers. For sensitive stuff like medical records, contracts, family photos, that is a real trust ask, and most people do it anyway because there is no alternative. twineconvert runs the conversion entirely in your browser using WebAssembly. The file never leaves your computer. There is no upload step at all. It started with HEIC to JPG because I was tired of explaining to Windows colleagues why my iPhone photos wouldn't open. It now does 301 conversions: - Image and photo (HEIC, JPG, PNG, WebP, AVIF, TIFF, BMP, ICO, SVG) - PDF (to JPG, to text, to DOCX, compress, combine) - Audio and video (MP4 to MP3, FLAC, WAV, MOV, MKV) - Office docs (DOCX, XLSX, ODS, EPUB, RTF) - Academic citations (BibTeX, RIS, NBIB, EndNote XML, CSL-JSON) - Genealogy (GEDCOM) - Medical (HL7 v2, FHIR Bundle, C-CDA) - Legal eDiscovery (Concordance DAT, OPT) - Data formats (JSON, YAML, TOML, JSONL, XML, CSV, TSV, SQL) - Color, encoding, hashes, dates, fonts, subtitles, maps Free, no signup, no watermark, no file size cap (limited only by your browser's RAM). Would love to hear which formats you would want next, and which tools you would actually us

Twine Convert

Convert any file in your browser

Convert any file in your browser